Improvement in turbine water-wheels



2Sheets---Sheet-1f '.l. E. SAFFRD.v

Turbine Wa'ter Wheels. VNo.l55,042. y Patented sept.15,1874.

monum- UNITED STATES PATENT (DEEICEu JOSEPH E. SAFFORD, OF HARTFORD, VERMONT.

IMPROVEMENT IN TURBINE WATER-WHEELS.

Specication forming part of Letters Patent No. 155,042, dated September 15,1874; application tiled July 11, 1874.

To all whom it may concern:

Be it known that I, J osEPE E. SAFE-ORD, of Hartford, Windsor county, Vermont, have V invented a new and Improved Water-Wheel,

of which the following is a specification:

The invention will iirst be fully described, and then pointed out in the claims.

Figure 1 is a sectional elevation of my improved wheel. Fig. 2 is a longitudinal section through the shaft and hub of the case, and a plan. view of the wheel, and Fig. 3 is a horizontal section of the wheel.

Similar letters of reference indicate corresponding parts.

A represents the lower rim of the wheel; B, the prolongation of the inner ends of the buckets, and C the extensions of the inner prolongations downward below the lower rim. The extensions C are also inclined backward and outward relatively to the direction in which the wheel turns, and the center of the wheel, in a manner to receive` greater effect than when terminating at the rim, or even if extended below in the plane of the upper vertical portions. D represents the gates, which are piv- `oted at the middle, E, so that the pressure of the Water will balance on them, and at their outer ends the chutes F have an o'set, G, formed on the circle described by them, so as to cut oiiz the water from behind them, and at the same time allow them to swing far enough to shut tight at the inner ends. H represents cranks or levers attached to the gates7 pivots above the top I of the case, and extending toward the hub tangentially as far as the size of the Wheel will allow, and connected at the inner ends to the ring J by rods L jointed to them and the ring to obtain leverage for operating them; and for the same purpose the ring is provided with a lever, K, extending to the periphery of the wheel,and carrying a toothed segment, M, with which" a pinion, N, 011 the shaft O, for operating the gates, gears, thus a'ording a contrivance 'by which the gates can be very easily worked.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination of rim .A and bucketextensions B C, constructed and relatively `arranged substantially as and for the purposedescribed.

2. The balance-gates D, in combination with chutes F, having an oii'set, G, substantially as specified.

JOSEPH E."SAFFORD.

Witnesses:

C. R. WHITMAN, J. C. BROOKS. 

